Knowing, deliberate actions of criminality are sufficient to piece the corporate veil.
I.e., the alleged violations are civil rather than criminal, and a reasonable person might believe Mazda's DMCA claims are unjustifiable.
You could sincerely believe that murder was ok, but that's not going to change how the law would view you murdering someone.
The idea around "piercing the corporate veil" is that you can't just slap a company in front of your actions -- regardless of whether or not you believe your actions are justified or legal -- and avoid legal consequences.